WTPA31 PHFO 021152 TCPCP1 BULLETIN Hurricane Walaka Intermediate Advisory Number 11A NWS Central Pacific Hurricane Center Honolulu HI CP012018 200 AM HST Tue Oct 02 2018 ...WALAKA REMAINS A DANGEROUS CATEGORY 5 HURRICANE HEADING TOWARD JOHNSTON ISLAND... SUMMARY OF 200 AM HST...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...14.1N 170.1W ABOUT 185 MI...300 KM S OF JOHNSTON ISLAND ABOUT 945 MI...1520 KM WSW OF HONOLULU HAWAII MAXIMUM SUSTAINED WINDS...160 MPH...260 KM/H PRESENT MOVEMENT...NNW OR 345 DEGREES AT 8 MPH...13 KM/H MINIMUM CENTRAL PRESSURE...921 MB...27.20 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Johnston Atoll A Hurricane Watch is in effect for... * Papahanaumokuakea Marine National Monument from Nihoa to French Frigate Shoals to Maro Reef A Hurricane Warning means that hurricane conditions are expected in the warning area within 36 hours. A Hurricane Watch means that hurricane conditions are possible within the watch area within 48 hours. DISCUSSION AND OUTLOOK ---------------------- At 200 AM HST (1200 UTC), the center of Hurricane Walaka was located near latitude 14.1 North, longitude 170.1 West. Walaka is moving toward the north-northwest near 8 mph (13 km/h). A turn toward the north is expected later tonight with an increase in forward speed expected Tuesday through Wednesday. On the forecast track, the center of Walaka is expected to pass just to the west of Johnston Island on Tuesday. Maximum sustained winds are near 160 mph (260 km/h) with higher gusts. Walaka is a category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale. Little change in intensity is expected through Tuesday, with a weakening trend expected to begin late Tuesday night or early Wednesday. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 185 miles (295 km). The estimated minimum central pressure is 921 mb (27.20 inches). HAZARDS AFFECTING LAND ---------------------- WIND: Tropical storm force winds are expected across Johnston Island starting late tonight, with hurricane conditions expected by Tuesday afternoon. SURF: Large surf will continue to affect the Johnston Island reefs and shorelines through Wednesday. RAINFALL: Heavy rainfall associated with Walaka will continue across Johnston Island through early Wednesday. NEXT ADVISORY ------------- Next complete advisory at 500 AM HST. $$ Forecaster Jelsema